class_docstr: Test class for AthenaClient
docstr: Athena - Check Table Exists - Does Not Exist
docstr_tok: ["Athena","-","Check","Table","Exists","-","Does","Not","Exist"]
code: def test_check_table_exists_invalid(self):
      """Athena - Check Table Exists - Does Not Exist"""
      self.client._client.results = None
  
      assert_false(self.client.check_table_exists("test_table"))
  
imports: from datetime import datetime
  import os
  from mock import Mock, patch
  from nose.tools import assert_equal, assert_false, assert_count_equal, assert_raises, assert_true, raises
  from streamalert.shared.athena import AthenaClient, AthenaQueryExecutionError
  from streamalert.shared.config import load_config
  from tests.unit.helpers.aws_mocks import MockAthenaClient
label_desc: Use image node_id 7 for calling the TestAthenaClient obj's underlying member method code with example usage: obj.test_check_table_exists_invalid() without return types